The Predictive Role of Parathyroid Hormone for Nonalcoholic Fatty Liver Disease following Bariatric Surgery

Table 3

Liver status and PTH level in clinically severe obese patients before and after bariatric surgery.

Variable	Before	After	P value
Liver stiffness measurement (kPa)	6.1 ± 1.25	5.42 ± 1.52	0.002
AST (IU/L)	23.60 ± 10.48	22.26 ± 12.93	0.382
ALT (IU/L)	26.69 ± 19.30	19.92 ± 11.79	<0.001
GGT (IU/L)	31.62 ± 20.21	20.63 ± 24.79	<0.001
ALP (IU/L)	196.25 ± 53.79	222.50 ± 65.61	<0.001
FIB-4	0.59 ± 0.26	0.57 ± 0.40	0.123
NFS	−1.42 ± 1.21	−2.26 ± 1.25	<0.001
Steatosis (ultrasonography)			<0.001
Grade 0	5 (5.5)	16 (18)
Grade 1	19 (21.1)	47 (52.8)
Grade 2	53 (58.8)	24 (27)
Grade 3	13 (14.4)	2 (2.2)
PTH (pg/mL)	47.88 ± 24.22	45.44 ± 25.94	0.464

Data mentioned in N (%), mean ± SD; AST, aspartate aminotransferase; ALT, alanine aminotransferase; ALP, alkaline transferase; GGT, gamma-glutamyl transferase; FIB-4, fibrosis 4; NFS, NAFLD fibrosis score; PTH, parathyroid hormone.